DRIVE WITH AMPLIFIER FOR SAFETY VALVE WITH HIGH DRIVING MOMENT Russian patent published in 2015 - IPC F16K31/04 

FIELD: machine building.

SUBSTANCE: invention relates to the drive with amplifier for the safety valve with high torque driven by motor via the gear, the motor simultaneously with the safety valve opening pretension the rate-caged mechanical energy accumulator connected with drive shaft of the safety valve, the accumulator after rate-caging removal returns the accumulated energy, at that safety valve closes. The motor output is connected with planetary gear, its output rotor is connected with drive shaft of the safety valve. The mechanical energy accumulator contains several cylindrical springs with double-side winding and straight ends, their number complies with number of the planetary gear wheels. Each of the said springs from one side is connected without possibility of rotation with the planetary gear wheel, and on the opposite side it is connected with casing of the drive with amplifier.

EFFECT: invention creates rather high drive moment ensuring reliable closing of valves upon power failure, decreases time of valves locking.

8 cl, 5 dwg